Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual método tem um registro de 3-0?
 ###Tabelas: CREATE TABLE structures_past_or_present_600_m_and_taller_1969_ft (structures_past_or_present_600_m_and_taller_1969_ft_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Pinnacle height VARCHAR, Structure type VARCHAR, Main use VARCHAR, Town VARCHAR) CREATE TABLE nsc_events_and_division_1_winners (nsc_events_and_division_1_winners_id AUTO_INCREMENT PRIMARY KEY, Year INT, Winner VARCHAR, Location VARCHAR, Entrants INT, Winners Prize VARCHAR, Total Prize Pool VARCHAR) CREATE TABLE mixed_martial_arts_record (mixed_martial_arts_record_id AUTO_INCREMENT PRIMARY KEY, Res. VARCHAR, Record VARCHAR, Opponent VARCHAR, Method VARCHAR, Event VARCHAR, Round VARCHAR) CREATE TABLE clubs (clubs_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, City VARCHAR, Founded INT, First season in Segunda División INT, First season of current spell in Segunda División INT, Stadium VARCHAR, Capacity INT, Field VARCHAR, Top division titles INT, Last top division title VARCHAR) CREATE TABLE parties_involved_in_the_2007_government_formation (parties_involved_in_the_2007_government_formation_id AUTO_INCREMENT PRIMARY KEY, From VARCHAR, Until VARCHAR, Name VARCHAR, Party VARCHAR, Function VARCHAR)  
SELECT Method FROM mixed_martial_arts_record WHERE Record = 3-0